This is fundamentally different from Web streams' pipeThrough(), which starts actively pumping data from the source to the transform as soon as you set up the pipe. Pull semantics mean you control when processing happens, and stopping iteration stops processing.
我国地大物博，好山好水哺育着热爱生活的人民，塑造了各具特色的地方美食。社交平台上，许多网友分享了外地朋友寄来的年货。浙江温州干货大礼包、山西白花花的大馒头、四川的手工腊肠……或是用风干腌制锁住美味，或是以易储存、高能量食品抵御寒冷，或是将时间窖藏酿成甘醇，每一份特产都是一方水土的结晶，藏着独属于当地的自然禀赋与生活智慧。一份份“硬货”，超越简单的礼尚往来，勾勒出一幅鲜活的地域文化图景，也诠释了年味动人的情感内核。
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* 核心逻辑：能看到的人数 = 弹出的矮个子数量（count） + （栈顶有更高的人则+1，否则+0）